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Full Stack Automation Engineer

GigaBrands Rio de Janeiro, Southeast, Brazil

hybridfull-time
Posted Jun 26, 2026

**Role & seniority: ** Tech/Software Engineer (production LLM + RAG), 3+ years experience (not specified as senior/principal)

**Stack/tools: ** TypeScript, Node.js, React/Next.js, PostgreSQL, CI/CD, n8n, Claude Code; AI/LLM: Claude/OpenAI (deployed), RAG (embeddings, chunking, retrieval); Nice: AWS Lambda, Terraform, Docker, Amazon SP-API, Slack bots, Playwright

**Top 3 responsibilities: **

  • Build and iterate AI pipelines (classification, response generation, sales intelligence, lead qualification, trend/content workflows)

  • Improve RAG quality (chunking, re-ranking, hybrid search, vector DB maintenance) and integrate tool/function calling for real-time data

  • Ensure reliability/performance via quality gates, debugging model errors, and optimizing LLM cost/latency plus observability/tracing and dashboards

  • Must-have skills:

    • Production LLM experience (Claude/OpenAI live systems)

    • RAG experience: embeddings, retrieval, chunking, context handling

    • 3+ years TypeScript/Node.js

    • Strong React fundamentals (architecture/state/performance)

    • PostgreSQL (queries, migrations, indexing, optimization)

    • API integrations (REST, OAuth, webhooks)

    • Linux server experience (SSH, deployments, log debugging)

  • Nice-to-haves:

    • Multi-agent orchestration; deeper Anthropic Claude expertise (system prompts, tool use)

    • Vector DB tech (pgvector/Pinecone), Slack API/bots

    • Ad platform APIs (Meta/Google/LinkedIn),

Full Description

WHO WE ARE We've built an AI-native internal platform that powers every aspect of our Amazon brand management business. AI isn't a feature — it's the backbone.

  • LLMs classify and respond to inbound communications

  • AI generates pre-call intelligence briefs from raw enrichment data

  • A RAG system feeds context into every generation pipeline

  • An AI checkpoint system audits all generated content against quality gates

The platform is already live and scaling fast

  • 17+ background services

  • 130+ frontend pages

  • 214 backend services

  • 184 database tables

  • Dozens of autonomous AI pipelines

  • OUR CORE VALUES

  • Be A Moral Human

  • Serve a higher purpose. Everything we build and every decision we make is grounded in doing the right thing.

  • Improve 1% Daily

  • Strive for 1% better every day. Consistent, compounding improvement is how we build world-class systems and teams.

  • Extreme Ownership

  • Own your actions. No excuses, no hand-offs as a crutch. If it's in your world, it's your responsibility.

  • Solve Problems, Don't Create Them

  • Every challenge has a solution. Don't slow down the team by creating new problems — come with answers, not blockers.

  • Make an Impact

  • Focus on meaningful results. We measure success by the difference we make, not the hours we log.

  • Fail Fast & Fail Forward

  • Don't be afraid to fail. Take that failure, learn from it, and move forward stronger. Every failure is a lesson.

  • WHAT YOU'LL BUILD & SCALE

  • AI Communication Pipelines

  • Classify inbound messages by category, intent, urgency, and tone

  • Generate contextual responses using enrichment data

  • Implement and tune human approval gates

  • AI-Powered Sales Intelligence

  • Transform raw enrichment data into structured pre-call briefs

  • Generate backgrounds, pain hypotheses, talking points, and rapport hooks

  • RAG System

  • Maintain and improve the vector database with embeddings

  • Implement markdown-aware chunking strategies

  • Build async ingestion workers and semantic search APIs

  • Trend Intelligence Engine

  • Process RSS feeds, social media, video platforms, and search trends

  • Generate reports, forecasts, and content drafts

  • Run autonomously on scheduled jobs

  • Content Quality Pipeline

  • Extend the multi-agent system (outline → audit → generate)

  • Maintain binary quality gates (PASS/FAIL with citations)

  • Support multiple content formats across the pipeline

  • Automated Lead Qualification

  • Enrich leads with product data and market insights

  • Build AI scoring and qualification grading systems

  • Generate automated audit reports

  • AI Executive Assistant

  • Build and maintain Slack-integrated operations

  • Automate scheduling workflows

  • Triage and respond to email autonomously

  • DAY-TO-DAY RESPONSIBILITIES

  • Build and improve AI pipelines for client performance insights

  • Improve RAG retrieval quality (re-ranking, chunking, hybrid search)

  • Add tool use / function calling for real-time data in LLM pipelines

  • Debug classification errors and improve model accuracy

  • Optimize LLM costs, latency, and performance

  • Build dashboards for AI metrics and usage monitoring

  • Add observability and tracing to AI pipelines

  • Expand content quality systems to new formats and use cases

  • TECH STACK

Core: TypeScript · Node.js · React / Next.js · n8n · PostgreSQL · CI/CD · Claude Code

Nice to have: AWS Lambda · Terraform · Docker · Amazon SP-API · Slack Bots · Playwright QUALIFICATIONS

Required

  • Production LLM experience — Claude or OpenAI deployed in real, live systems

  • RAG system experience — embeddings, retrieval, chunking, and context handling

  • 3+ years TypeScript / Node.js

  • Strong React skills (component architecture, state management, performance)

  • PostgreSQL — queries, migrations, indexing, query optimisation

  • API integrations — REST, OAuth, webhooks

  • Linux server experience — SSH, log analysis, debugging, deployments

Strong Pluses

  • Multi-agent LLM systems and orchestration

  • Anthropic Claude expertise (prompt engineering, tool use, system prompts)

  • Vector search and embeddings (pgvector, Pinecone, or similar)

  • Slack API and bot development

  • Ad platform APIs (Meta, Google, LinkedIn)

  • LLM observability — cost tracking, tracing, monitoring

  • Amazon / eCommerce experience

  • AI-assisted dev tools (Cursor, Claude Code, etc.)

  • WHAT WE OFFER

  • Competitive salary based on experience

  • High-impact role with genuine ownership over systems that matter

  • Full time remote role

  • Work directly on one of the most advanced AI-native business platforms in the Amazon space

  • A team that moves fast, thinks big, and holds a high bar

  • PTO after successfully completed probationary period

  • WHAT WE OFFER

  • Competitive salary based on experience

  • High-impact role with genuine ownership over systems that matter

  • Full time remote role

  • Work directly on one of the most advanced AI-native business platforms in the Amazon space

  • A team that moves fast, thinks big, and holds a high bar

  • PTO after successfully completed probationary period

TypeScriptNode.jsReactNext.jsPostgreSQLLLM DeploymentRAG SystemsAPI IntegrationLinux Server ManagementVector DatabasesPrompt Engineeringn8nCI/CDClaude CodeMulti-agent SystemsObservabilitymulti-location

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